public void ShouldMatchDataIn_OperatingOnCollection_WhenComparisonCollectionIsDifferentSize_ShouldThrow() { //---------------Set up test pack------------------- var left = new[] {IntWrapper.For(1), IntWrapper.For(2)}; var right = new[] {IntWrapper.For(1) }; //---------------Assert Precondition---------------- //---------------Execute Test ---------------------- Assert.Throws<AssertionException>(() => left.ShouldMatchDataIn(right)); Assert.Throws<AssertionException>(() => right.ShouldMatchDataIn(left)); //---------------Test Result ----------------------- }